1. The plaintiff's incidental appeal and the defendant's appeal are all dismissed.

2. Costs arising from an appeal and an incidental appeal shall be respectively.

The reasoning for this Court’s explanation is as stated in the reasoning of the judgment of the court of first instance, except for the rejection of each description of evidence Nos. 1 and 2 (including each number), which is insufficient to acknowledge the defendant’s assertion as evidence submitted additionally in the trial. As such, this Court cites it as it is in accordance with the text of Article 420 of the Civil Procedure Act

Therefore, the plaintiff's claim of this case is justified within the scope of the above recognition, and the remaining claims are dismissed as it is without merit. The judgment of the court of first instance is just in conclusion, and the plaintiff's incidental appeal and the defendant's appeal are dismissed as it is without merit. It is so decided as per Disposition.